>> what about china's continental border with russia. what about china buying into actuallyand actually, wa colonizing siberia? how does that worry the united states, china getting stronger on account of siberia and throw a have not heard on any proposal? >> i have not heard of any proposals of china buying into siberia. >> oh, investment. >> united states once a prosperous china that assumes greater responsibility and engagement from the world commensurate with its capabilities and economic power. we do not want china simply to grow and take a free ride or get a free ride on everything else that is happening around world. china needs to step up and take a responsible role in managing international affairs, whether it is conflict in africa, to the middle east, to north korea, and elsewhere. we're seeing some of that already. there's good cooperation on many issues, including afghanistan, engagement with china on issues of north korea. we may not always agree, and certainly china has cut back its purchase of iranian oil and is working wit